Dihydrorhodamine 123 (DHR) is a non-fluorescent, membrane permeable molecule that can loaded into cells to measure oxidative burst. Upon oxidation, it is converted to [http://en.wikipedia.org/wiki/Rhodamine rhodamine], which can be measured by flow cytometry in the fluorescein channel ([http://omlc.ogi.edu/spectra/PhotochemCAD/html/rhodamine123.html spectra]).

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Isolation of eosinophils for migration studies in collaboration with Bryan Hurley